12523522651 has 8 divisors (see below), whose sum is σ = 13261392144. Its totient is φ = 11785785600.

The previous prime is 12523522643. The next prime is 12523522709. The reversal of 12523522651 is 15622532521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12523522651 - 2³ = 12523522643 is a prime.

It is a super-2 number, since 2×12523522651² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12523522051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214576 + ... + 266626.

It is an arithmetic number, because the mean of its divisors is an integer number (1657674018).

Almost surely, 2^12523522651 is an apocalyptic number.

12523522651 is a deficient number, since it is larger than the sum of its proper divisors (737869493).

12523522651 is a wasteful number, since it uses less digits than its factorization.

12523522651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66221.

The product of its digits is 36000, while the sum is 34.

The spelling of 12523522651 in words is "twelve billion, five hundred twenty-three million, five hundred twenty-two thousand, six hundred fifty-one".